我必须编写一个小程序,在左侧我必须使用一个面板来包含可以是按钮列表的车辆列表,这是什么问题,车辆的数量没有给出! ! 所以,我需要滚动面板时车辆的数量实在是太多了,jscrollpane滚动面板
我的JFrame的做到这一点,但它并不能与面板的工作是正确的,请帮我用一个例子
我使用的代码到滚动面板是:
public class VehicleList extends JPanel {
private ArrayList<VehicleReport> vehicles;
private ArrayList<JButton> v_buttons = new ArrayList<JButton>();
public void showList(ArrayList<Vehicles> vehicles)
{
this.vehicles = vehicles;
//...
add(getScrollpane());
setSize(155,300);
}
public JScrollPane getScrollpane()
{
JPanel panel = new JPanel();
panel.setPreferredSize(new DimensionUIResource(150, 300));
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints constraint = new GridBagConstraints();
panel.setLayout(gridbag);
constraint.fill = GridBagConstraints.HORIZONTAL;
JLabel title = new JLabel("Vehiles list");
constraint.gridwidth = 2;
constraint.gridx = 0;
constraint.gridy = 0;
constraint.ipady = 230;
gridbag.setConstraints(title, constraint);
panel.add(title);
// end of set title
constraint.gridwidth = 1;
int i=1;
for(JButton jb : v_buttons)
{
constraint.gridx =0;
constraint.gridy = i;
gridbag.setConstraints(jb, constraint);
panel.add(jb);
JLabel vehicle_lable = new JLabel("car" + i);
constraint.gridx = 1;
constraint.gridy = i;
gridbag.setConstraints(vehicle_lable, constraint);
panel.add(vehicle_lable);
i++;
}
JScrollPane jsp = new JScrollPane(panel);
return jsp;
}
}
在jaframe添加JScrollPane中后的JFrame我放置此
pack();
setSize(250,250);
setLocation(100,300);
它的工作很清楚!!!!
你可以提供你已经代码? – akf 2009-09-18 17:26:50
嗨,我现在把它,谢谢你的关注... – sirvan 2009-09-18 17:41:34